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Pipe Nd

hphp/hack/manual/hsl/Functions/HH.Lib.IO/pipe_nd.md

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:::info[Note] This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information. :::

:::warning Deprecated: Use pipe() instead. :::

Hack
namespace HH\Lib\IO;

function pipe_nd(): (CloseableReadFDHandle, CloseableWriteFDHandle);

Returns

  • (CloseableReadFDHandle, CloseableWriteFDHandle)
<!-- HHAPIDOC -->